Watch strap buckle



FIG. 1 is a top, right perspective view of the watch strap buckle;

FIG. 2 is a front elevation view of the watch strap buckle;

FIG. 3 is a rear elevation view of the watch strap buckle;

FIG. 4 is a left side elevation view of the watch strap buckle;

FIG. 5 is a right side elevation view of the watch strap buckle;

FIG. 6 is a top plan view of the watch strap buckle; and,

FIG. 7 is a bottom plan view of the watch strap buckle.

CLAIM The ornamental design for a watch strap buckle, as shown anddescribed.